Electric protective system.



PATENTBD JUNE 9, 1903.:

3 SHEETS-SHEET 1 J. WEATHE'RBY, Jn. ELECTRIC PROTECTIVE SYSTEM.

APPLICATION FILED AUG. 11I 1902.

Vea; fltbomuo I0 IODBL.

NO MODEL.

J. WBATHERBY, JB.

ELECTRIC PROTECTIVE SYSTEM.

APPLICATION FILED AUG. l1| 1902.

3 SHEETS-SHEET 2.

gnwntoz PATBNTBD JUNE 9, 1903.

No. 730,422. PATENTED JUNE 9, 1903.'

J. WEATHERBY, JR.

ELECTRIC PROTECTIVE SYSTEM.

APPLICATION FILED AUG. 11, 1902. N0 MODEL. 3 SHEETS-SHEET 3.

' guanto:

atknmup UNITED STATES- Patented J' une 9, i903.

PATENT OFFICE.

TO S. O. SPRING, OF PEORIA, ILLINOIS.

ELECTRIC PROTECTIVIE SYSTEM.

SPECIFICATION forming part of Letters Patent N ou. 730,422, dated June 9, 1903.

Application filed August 11, 1902.

To aZZ whom it may concern:

' Be it. known thatfI, JOSEPH WEATHERBY, Jr., a citizen of the United States, residing at Philadelphia, in the county of Philadelphia 5 and State ofPennsylvania, haveinvented certain new and useful Improvements in Electric Protective Systems; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable othio. ers skilled in the art to which it appertains to make and use the same.

The invention relates to an electric protective system particularly designed for use in connection with safes, vaults, buildings, and

l5 other structures.

The object of the invention is to provide a system of this character whereby should an unlawful orunauthorized attempt be made to enter the safe, vault, or other structure due zo notice thereof will be communicated to the proper authorities to enable them to take steps to frustrate the attemptto unlawfully enter the safe', vault, or other structure.

[With the above and other objects in View,

2 5 which will readily appear as the nature of the invention is better understood, said invention consists in certain novel features of construcl tion and combinationand arrangement of 4o In the accompanying drawings, 1 denotes a safe, vault, building, or other structure desired to be protected, and 2 denotes the entrance-door.

denotesacircuit-connector of any desired as consisting of a casingl or barrel 4, in which is arranged a plunger Q5, adapted to engage Y.

lspring-brushes or contact-points G when the door is closed and to be retracted from engagement withysaid brushes by springs 7 upon the opening of the door. Q

constructiotnshown in the, present instancey Serial No. 119,293. (No model.)

The safe, vault, or other structure is pref#l erably com posed of two thicknesses of metal 8 and 9, the adjacent surfaces of which are entirely separated by an insulating substance 10 of any description.

The circuit-controlling mechanism is placed within the strong box 11, which in turn is preferably placed in the safe, vault, or other structure, and comprises the electromagnets 12 13 14 15, lhaving a uniform high resistance, and an automatic circuit-controller 16, preferably inthe form of an electric clock, which is designed to open and close the circuit at predetermined intervals aud which I have conventionally illustrated by showing a disk 17, having studs 1S, which are adapted to engage contactpoints 19 and 20 duringa portion of its revolution, and thereby completing the circuit. Any desi red form of circuit-controller may be used without departing from the spirit of the invention; but that shownrand described in my application Serial No. 116,811 is preferred.

21 denotes the primary signal-box, andy 22 denotes the auxiliary signal-box, of which latter there may be any desired number. The primary signal-box is preferably located at police vheadquarters and the. auxiliary box or boxes located at any desired place or places-as, for instance, when there is but one auxiliary box employed it may be secured to the front or other conspicuous point of the building in which the safe or vault is located.

The primary slgnalbox is provided with av cover (not shown) and incloses a double-balancedelectromagnet23, each side of which has a uniform high resistance corresponding with that of the electromagnets 12, 13, 14, and 15. p

24 and 25 denote the armatures cf the electromagnet, and 26 and 27 denote their springs, the latter of which is set to exert a greater pull' upon it's armature than the former.

' 28 denotes a post rising from the base of the electromagnet and provided with crossarms 29 and 30,' which are electrically connected to said post.

31 and 32 denote contact-points carried by the arms 29 and 30, respectively, which contact-points are engaged by the armature 25. 33 and 34 denote a similar set of contactpoints, the former being electricallyconnected to the cross-arm 29 and the latter being connected to but insulated from the crossarln 30. These contact-points 33 and 34 are adapted to be engaged by the armature 24.

35 denotes an electromagnet ot comparatively low resistance, also arranged within the signal-box; 36, its armature; 37, its audif ble electric signaling device in the form of a forrn of lamps in series, which have dilerent The switchboard may degrees of resistance. be located at any convenient place in the building within which the safe is located.

47 denotes the main line'closed circuit, preferably tapped to an electric-light line.

One side of the circuit is denoted by the numeral 48 and the other side by the numeral 49. The side 48 passes through the switch 40, one of the fuses 41, and through the lamps and 46 to the electromagnet'42,and`

the other side passes from the electromagnet 42 through the other fuse and through the switch.

50 denotestthe feed-circuit, and 51 and 52 denote the opposite sides of said circuit. The sides 51 and I52 of the feed-circuit are connected to the' sides 48 and 49 of the mainline circuit at a and b, respectively, and by u connecting these sides of the feed-circuit at these points of the main-line circuit the voltage' is materially reduced in the feed-circuit.

I will now proceed to trace both sides of the feed-circuit. Beginning at point a, the side "51 of the feed-circuit leads through the double-balanced electromagnet 23, and if an auxiliary signal-box is employed leads through thedonble-balanced electromagnet 23. From this magnetthe other side 52 of the circuit 50 leads to one of the contact-points 6, and

' when the door of the safe, Vault, or other structure is closed through the plunger 5, thence through the opposite con tact-point 6, thence through the electromagnets 14 13, thence through the armature 12' of the magnet 12, thence through the contact-peint 12b of said magnet, thence through the electromagnet 12, and thence to `thepoiht bwhere it joins the main-line circuit. Shouldthe current on the. electric-light line to which the ,main-line circuit 47 is connected be reduced or entirelydestroyed, if provision were not niadenvthe alarm would be given vat police headquarters, and when an auxiliary signalbox is usedl at the point where 'the box is lo-` cated and tc prevent this false alarm ll provide an auxiliary local circuit 53, which if the voltage has been materially reduced on f the main-line circuit or the current entirely cut OEE from said main-line closed circuit will supply the feed-circuit with a cnrrentof a voltage corresponding to that supplied by the main-line closed circuit until the main-line closed circuit has been restored to normal condition, at which instant the circuit 53 will x or the current entirely cut o the instant of this reduction in voltage or break in the cnrrent the armature 43 of the electrolnagnet 42 will' ybe released from said. magnet by a I spring 44a and simultaneously make contact with the point 44, thus completing the local circuit 53, which will then Ibel used for snpplying the feed-circuit., Ocoursen localities-Where there are no electric-light circuits the main-line circuit may be entirely ^dis,

pensed with and the feed-circuit be-connected directly with the local circuit 53. l

54 andvdenote the wires of a shunt-circuit, the wire 54 bein-g connected at one end 'to the`contact-point 19 ofthe circuit-controller and at the other end to the feed-circuit at the pointe, while the wire 55 is connected at oneend to the contact-point 2Qand at its other end lo the feed-circuit at the point f.,

The armature 15 of the electromagnet 15 is branched into the shunt-circuit by the Wires 55a and 54, snch'wire's constituting what I will term for convenience of reference the branch shunt-circuit. ,K

56, 57, and/58 denote switch-circuits, the Wire 56UL being connected at one end at the point g to the'wire 55a of the branch shunticircuit and at the other end to one element of a push-button 56b or other form of switch, while the wire 56 is connected at one end at the point h to the`wire '54 of the branch shunt-circuit and at the opposite end to the other element of the switch 5G".

' The wire 57 of the switch-circuit 57 is connected at one end at the point Z to thefeedcircuit and at the other end to one element of a switch 57h; while the wire 57c ofsaid switchcircut 57 is' tapped into the feed-circuit at the point lm.-

The wire 5Sa of the switch-circuit 58 iseconnectedat one end tothe pointy' of the feedwire and at the other end to one element ofa switch 58", and the Wire 58c of said switch-circuit 58 is connected at one end to the shuntcircut at the point lo and at the opposite end to the other element of the switch 58".

59 denotes what Ikshall for convenience term a vault-lining circuit, the wire 59 of which is connected at one end to the wire 57c at the v point fn and connected at theother end to the thickness 8 of the safe or vault, while the wire 59b of said circuit is connected at one end to the opposite thickness 9 of the safe or vault and at-the other end is connected at the point o to the feed-circuit.

.A person attempting to gain entrance to the safe or vault by boring through the walls thereof will, as the bit or tool passes from one thickness ofmetal into the other, shortcircuit the line in a manner to be hereinafter explained.

denotes a door shunt-wire, one end of which is tapped to the wire 58c at the point p and the other end of which is connected to the armature of the magnet 13, and when said armature is demagnetized leads from the contact-point 13 and is connected to the armature of the magnet 14 and when said armature of the magnet 14 is magnetized leads from the contact-point 14a to the magnet 15 and from the magnet 15 taps into the feedline at the point q.

61 denoted the electric-light circuit for the lamp 38, one side 61a of the circuit extending from the source of electrical energy or supply through the lamp to the contact-point 61", while the other side extends from the source of electrical supply to the armature 36 of the magnet 35.

62 denotes the alarm-circuit. The side 62a after leaving the bell is connected to the post 28, and the'side 62b after leaving the battery passes through the electromagnet 35 and is provided with branches 62 and 62d, the former of which is connected to the armature-post 63 andthe latter of which is connected to the armature-post 64.

When an auxiliary signal-box is employed,

it is of course understood that it is equipped in substantially the same' manner as a primary signal-box, and in order to avoid repetition no detailed description'of the parts contained in said auxiliary signal-box is made, the parts in said auxiliary box that correv spond with those in the primary box being indicated by the same numerals as those used to designate the parts in the primary box, but primed. -v

Assuming the parts to be in the position shown in Fig. 1, should the lead-wire be cut, short-circuited, or grounded at any point the magnet 12 will become denergized, allowing the armature to dropback, opening the circuit between contact-point12b and armature '12, thus allowing the magnets 13 and 14 to also become denergized. The pathl of the feed-.circuit is open and one side of the double! balanced electromagnet denergized and its armature 24 released, allowing said armature armature, thus shunting switch 56h. 56b may be opened and the operator pass out.

to contact with the point 33, which completes the bell-circuit 62 and allows the alarm to be given. Upon denergizing said magnet the circuit is completed between post 64 and the electromagnet 35 of the bell-circuit, thus causing the armature 36 of said magnet 35 to rapidly pulsate or vibrate and complete the electric-light circuit 61, and thus cause the rapid flashing of the lamp 38, and if auxiliary signalboxes are employed like action takes place in each, which will be maintained until the currents have been restored to their normal condition, as will be hereinafter described. Should a current of electricity from any othersource be introduced into the feedcircuit for the purpose of holding the armature 24 to its magnet, and thereby enter the safe, vault,or other structure without notifying headquarters, the armature 25 of the double-balanced electromagnet will be drawn down on the poles of its magnet,.thus completing the circuit through the contact-pointy 32, the armature-post 63, wire 62e, and the bell-circuit, 'when the bell will be sounded andthe lights displayed inthe same manner as when the armature 24 is released from its magnet. employed, the same action will take place in each, and in either event the alarm will be given and the signal be displayed until the parts are restored to their normal position,-

which can only be done by a properly-author ized person entering the safe, vault, or other structure and resetting the parts in the manner hereinafter to be explained. Y

When the feed-wire is cut, short-circuited,

ICO

or grounded at any point, the magnets 12,13,

and 14 are instantaneously demagnetized, allowing the feed-circuit to be broken between the contact-point 1212 and the armature 12' of the magnet 12, thus cutting off the supply of current to the signal-boxes. The signals, both audible and visual, will now operate, and thus indicateA that the wires are being tampered with. v

To reset the system, thesafe is entered and the switch 58h is closed to short-circuit the break at the door. Switch 57b is then closed and magnet 12 thereby energized, whereupon 57b is immediately-reopened. Switch 56" is then closed, short-circuiting magnet 13 and creatingapath through magnet 15. Switch 58h is then opened, thus causing current to pass` through 15, causing it to draw nphits en The door may thenlbe closed, short-'circuiting magnet 15, thus permitting its armature to recede, breaking lthe short circuit around 13, and thus causing the current to take its normal course.

\ to the sate, vault, or other structure by boring lthereinto, when the drill or tool passes through one of the thicknesses and contacts with the other thickness the electromagnet IIO 12 will be short-circuited, thus allowing it to become denergized and the armature 12 to be released, thus breaking the feed-circuit and giving the signal to headquarters.

To reset the parts to their normal positions, the switches 56h, 57h, and 58b are operated in a manner as hereinafter described.

ln the regular operation of the system the circuit-controller operates at predptermined intervals of time to move its contact-points 18 into engagement with the contact-points 19 and 20, and as the contact-points 18 are moving in engagement with the contact-points 19 and 2O the shunt-circuit iss-completed between points e and f on magnet 13, thus allbwing magnet 13 to denergize and its armature to make contact with the point 13 and permitting ot' the opening of the safe-door without making an alarm at headquarters. lThe door may be opened any time while the contact-points 18 are in engagement with the contactfpoints 19 and 20,/itbeing assumed, for instance, that it takes the contact-points 18 onehour to pass from engagement with the contact-points 19 and 20, which will thus allow the safe to be opened any time during that hour. However, the instant the contactpoints 18 have moved out of engagement with th'e contact-points 19 and 2O the feed-circuit is restored to its normal condition, as is also the armature of the magnet 13.l lf the door be opened when the contact-points 18 are in engagement with the contact-points 19 and 20, the magnet-15 is energized, causing its armature to be drawn against contact 15", and the branch sh'unt-circuitis completed on magnet 13, thus keeping magnet 13 denergized until 'the door is again closed, and thus preventing the giving'of a signal after the con tact-points 18 have passed by and from the contachpoints/19 and 20.A A

At the close of business-hours the door of the safe,'vault, or other structure is closed. The current then has twopathston the feedcircuit, one through the circuit-connector 3 to point g and one vfrom point k to wire 58", through wire 60 to armature of magnet 13,

thence through contact-point 13a to armature of magnet 14, thence through contact-point 14fto magnet 15,'thence to feed-circuit at point q. The resistance of the first path being less than the resistance of the second path, the magnet 15 is thus denergized, allowing branch shunt-circuit to be opened through the contact-point 15b and 'armature 15", thus allowing magnet 13 to renergize and restore the system to its normal condition.

From the foregoing description, taken in connection with the accompanying drawings, it is thought that the construction, mode of operation, and advantages'of my improved protective system will be readily apparent without requiring a more extended explanation. l

AVarious changes -in the form, proportion, andthe minor details of 'construction may be. resorted to without departing from the prin'- ciple or sacrificing any, of the advantages of this invention.

Having thus described my invention, what l claim as new, and desire to secure by Letters Patent, isy 1. ln an electric safe protective system, the combination with the feed-circuit of a doublebalance magnet included in'said circuit,a bellcircut, an electromagnet installed in the bellcircuit, an electric-light circuit electrically connected to the contact-point and armature of the last-named electromagnet, and branch Wires from the bell-circuit including circuitmakers controlled by the movements of the armatures of the double-balanced magnets.

2'. ln anielectric safe protective system, the combination with the feed-circuit, of a signal device yinstalled within said circuit, a mainline circuit,`an electromagnet installed in the main-line circuit, vsaid feed circuit being tapped into the main-line circuit, resistances tapped into the main-line circuit at points to reduce the current in the feed-circuit, and a local circuit, one side'of whichis separated from one side of the feed-circuit by a contactpoint and the armature of said magnet and the other side of which is connected to the opposite side of the feed-circuit, whereby when the main-line circuit is broken, or the cnrrent reduced, the armature of thel electromagnet will be released and will connect the local circuit with the feed-circuit and'retain the signaling device in normalposition until the main-line circuit has been restored to its normal condition, substantially as specified. y

3. ln an electric safe protective system, the

circuit tapped into the feed-circuit, an auto.

matic circuit-controller for the shunt-circuit, whereby at predetermined` intervals, governed by the automatic circuit-controller, the feed-circuit will be shnnt'ed from the signal device, substantially as specified.V

4. In an electric safe. protective system, the combination with the feed-circuit; of an electric signal device installed withinsaid circuit, a strong box adapted to be placed within the safe or vault to be protected, electromagnets' 12, 13, 14 and 15 located within the strong box, the magnets 12, 13 and 14 being in series, a circuit-connector installed within the feedcircuit to make and break the circuit upon the opening of the door of the safe or vault, a shunt-circuit tapped into the main circuit, an automatic circuit-controller for closing said shunt-circuit, and a door'shuntwire tapped into the feed-.circuit at one side of the circuit-connector and extendingv through the contact-points ofmagnets 13 14 and through magnet land tapped into the feed-circuit at7 the other side of the circuitconnector, substantially as set forth.

. 5. Iuan electric safe protective system, the

bombin'ation with the feed-circuit of an elec- Y the safe or Vau shunt-wire tapped into the feed-circuit at one side of the circuit-connector and extending through the contact-points of magnets 13 14 and through magnet 15 and tapped into the feed-circuit at the other` side of the circuitconnector, a vault or safe lining circuit, switch-circuits for resetting the electromagnets, and a branch shunt-circuit connecting one of the switch-circuits with the shunt-circuit, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing witneSSeS.

JOSEPH WEATHERBY, JR. Witnesses:

J. CHESTER WILSON, V. V. SHOCKLEY. 

